UM’s research on active power filter that reduces cost and operating losses ranks among the top in the world
減成本損耗 澳大有源電力濾波器研究居世界前列

The University of Macau’s (UM) studies on active power filter (APF) have obtained fruitful results. The university now ranks among the top in the world in terms of the number of APF-related papers published during the period between 2012 and 2017 in the three most authoritative journals in the field of power electronics, namely IEEE Transaction on Industrial Electronics, IEEE Transaction on Power Electronics, and IET Power Electronics (click here for relevant statistics from Scopus).

APF is an important device for improving power quality, and provides crucial support for the development of smart grid technologies, which are considered by many governments to be an effective way to reduce energy dependence and to mitigate the impact of global warming. The United States and China are actively promoting the development of smart grid technologies. According to the National Bureau of Statistics of China, the said market in China will amount to RMB 15 billion by the year 2020.

Since 2005, UM’s power electronics research team has been focusing on the development of hybrid power filters, a combination of passive power filters and active power filters, with the aim of reducing the cost of power filters and operating losses. Prof Wong Man Chung, head of UM’s Department of Electrical and Computer Engineering, says that the team successfully installed the first capacitive grid-connected hybrid power quality compensator at the Macau Water Supply Company in 2014. He adds that the compensator has been operating smoothly with an operating efficiency reaching 98.8 per cent when fully loaded, and is bringing substantial economic benefits to the company. According to Prof Wong, the compensator is characterised by its medium price range and high efficiency, and the design has been patented in China and the US. In addition, the research team has been participating in energy conservation projects at UM and will install the energy conservation devices developed in-house at UM to increase energy efficiency.

澳門大學在有源電力濾波器（Active Power Filter，APF）研究有豐富的科研成果和產出，在2012至2017年間於《IEEE Transaction on Industrial Electronics》、《IEEE Transaction on Power Electronics》及《IET Power Electronics》全球三份電力電子範疇中最具學術權威的期刊上發表高質量論文。澳大APF研究居世界前列（參見Scopus統計資料），促進全球智能電網的發展，是全球在APF研究論文發表篇數最多的大學之一。

APF是有效提高電能質量的重要設備，也是支撐智能電網發展的重要元素，而智能電網被許多政府認為是一項能夠有效減低能源依賴、減緩全球溫室效應的措施。近年美國及中國都正積極推動智能電網的發展。據中國國家統計局公佈的資料，到2020年，智能電網的國內市場將高達150億元人民幣。

自2005年起，澳大電力電子研究團隊把研究重心放在混合型電力濾波器—即無源電力濾波器及有源電力濾波器的結合，旨在降底電力濾波器的成本及其運行時的損耗。澳大科技學院電機及電腦工程系主任黃民聰表示，2014年成功為澳門自來水公司安裝首台容性阻抗連接的混合型電流質量補償器，並安全運行至今，滿載時運行效能高達98.8%，為澳門自來水公司帶來實質的經濟效益，成為擁有同樣功能的低能耗電流質量補償器的首個工業化平台，其特點是中等價格及高效。該研究已獲得中國及美國的發明專利。同時，研究團隊亦參與了澳大的節能工作，並將會在澳大安裝自主研發的節能裝置，提高用電效率。